Pyracantha angustifolia

(Franch.) C.K.Schneid. (1906)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Rosids Order: Rosales Family: Rosaceae Genus: Pyracantha

firethorn, narrow-leaved firethorn

Description

Key Characters:

Growth Form: Shrubs up to 4 m tall.

Stems: Stems rigid, erect or sprawling, many-branched, forming a dense growth, young branches tomentose, thorns leafy.

Roots:

Leaves: Leaves simple. Alternate. Blades oblong to oblong–lanceolate, 1.5–5 cm long, 0.5–1.6 cm wide. Apex obtuse and mucronulate, or emarginate. Base cuneate-attenuate. Upper surfaces pubescent when young, soon glabrate and dark green; lower surfaces grayish tomentose, margins entire or with a few small teeth near apex. Margins crenulate, serrulate, or entire. Short-petiolate. Stipules minute, caducous.

Flowers: Flowers in dense corymbs 2–4 cm in diameter, pubescent throughout. Flowers bisexual (perfect). Calyx lobes 5, small, persistent in fruit; sepals broadly deltate, 0.8–1 mm long, margins minutely denticulate. Corolla of 5 petals; petals 8–10 mm long. Stamens 15–21. Ovary 1/2 inferior, carpels 2–5, distinct on ventral side, but adnate to hypanthium ca. ½ their length on dorsal side, ovary walls becoming hard in fruit; ovules 2 per cell.

Fruit: Fruit bright orange to brick–red; depressed–globose; 6–8 mm in diameter. Seeds 1 per endocarp.

Ploidy: 2n = 34

Habitat:

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Only found in cultivation
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents

Water/Ocean
Birds

Vegetative Reproduction

Pollinators

Bibliography

Name Published In: Ill. Handb. Laubholzk. 1: 761 (1906)

Other References

Wagner et al. 1990:1105 (K, H); Herbarium Pacificum Staff 1999:9 (K, remove H [re-IDed as P. koidzumii]); Staples & Herbst 2005:477 (DESCR); Starr et al. 2008:48 (EM); Pratt & Bio 2012:78 (H)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Pyracantha angustifolia Honolulu, Jamehameha Girls' School Preserved_Specimen Judd Jr., A.F. 8345 Oahu BISH 1937-04-03
2 Pyracantha angustifolia Kokee State Park, along main road, ca. 1/4 mile from cabins Preserved_Specimen Spence, G. 410 Kauai BISH 1976-11-01
3 Pyracantha angustifolia Honolulu, Jamehameha Girls' School Preserved_Specimen Judd Jr., A.F. Oahu BISH 1937-04-03
4 Pyracantha angustifolia Kokee State Park, jct. of Halemanu Rd. and Kokee Rd. near Tracking Station Preserved_Specimen Wagner, W.L. 4962 Kauai BISH 1983-08-26
5 Pyracantha angustifolia Highway 550, 16 mile marker, crossing Kaunuohua Ridge Preserved_Specimen Plews, J.H.R. Kauai BISH 1986-03-15
6 Pyracantha angustifolia Waimea district, Waimea Canyon State Park, along hwy 550 near Puu ka Pele, along driveway to microwave towers and equipment buildings, opposite Papaalai Ridge Rd Grevillea robusta plantation with understory of Lantana camara. Preserved_Specimen Lorence, D.H. 7606 Kauai BISH 1994-11-16
7 Pyracantha angustifolia Kulani Correctional Facility, south Hilo District, near old warden house site disturbed area. Preserved_Specimen Rubenstein, T. Hawaii BISH 1997-06-04
8 Pyracantha angustifolia East Maui, Polipoli State Park campground Probably planted. Preserved_Specimen Starr, F. 9901077 Maui BISH 1999-01-07
9 Pyracantha angustifolia Highway 11 nr Volcano Village, mile marker 27, E of Hawai'i Volcanoes Nat'l Park, Puna District. Rare on side of road in disturged vegetation. Preserved_Specimen Pratt, L.W. 3520 Hawaii BISH 2005-09-09
10 Pyracantha angustifolia East Maui, Keahuaiwi Gulch, Kula Scattered in pastures near residential area. Associated vegetation: Pennisetum clandestinum, Senecio madagascariensis, Cotoneaster pannosus. Preserved_Specimen Starr, F. 508171 Maui BISH 2005-08-17
11 Pyracantha angustifolia Kust up from Kokee Discovery Center along Waimea Canyon Rd Mesic-wet forest along roadside Coprosma sp., Dodona viscosa, Euclyptus sp., Kadua sp., Leptecophylla tameiameiae, Lonicear japonica, Odontosoria chinensis, Psidium cattleianum, Rubus argutus, Scaevola sp. Preserved_Specimen Wolkis, D. 1272 Kauai BISH 2021-04-06